Clarke CAT103 Operation & Maintenance Instructions Manual
The Clarke CAT103 is a heavy-duty impact wrench designed for automotive and industrial use, featuring adjustable power settings and a twin hammer impact mechanism. With a 1/2" square drive, it provides a maximum torque of 400 ft/lb (542 Nm). It's powered by an air inlet with a 1/4" BSP connection. This impact wrench is an invaluable tool for mechanics and professionals requiring dependable and powerful tightening and loosening of fasteners.
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1/2” HEAVY DUTY IMPACT WRENCH MODEL No: CAT103 Part No: 3110859 OPERATION & MAINTENANCE INSTRUCTIONS 0707 Thank you for purchasing this CLARKE Heavy Duty Impact Wrench, designed for heavy automotive and industrial use, and incorporating adjustable power settings, forward and reverse action and a twin hammer impact mechanism. Before using the wrench, please read this leaflet thoroughly and follow the instructions carefully, in doing so you will ensure the safety of yourself and that of others around you, and you can look forward it giving long and satisfactory service. SPECIFICATIONS Drive Size ............................................................ 1/2” Square Max Torque ........................................................ 400 ft/lb (542 Nm) Air Inlet ................................................................ 1/4” BSP Ave. Air Consumption ...................................... 4 cfm Air Pressure Max ................................................ 6.2 bar (90psi) Noise Level ......................................................... 91 dB A Vibration Level .................................................. 1.2m/s2 Net Weight ......................................................... 2.78 kg Dimensions LxWxH ............................................. 245 x 73 x 186 Part No ................................................................ 3110859 Please note that the details and specifications contained herein, are correct at the time of going to print. However CLARKE International reserve the right to change specifications at any time without prior notice. Always consult the machine’s data plate GUARANTEE This CLARKE product is guaranteed against faulty manufacture for a period of 12 months from the date of purchase. Please keep your receipt as proof of purchase. This guarantee is invalid if the product is found to have been abused or tampered with in any way, or not used for the purpose for which it was intended. Faulty goods should be returned to their place of purchase, no product can be returned to us without prior permission. This guarantee does not effect your statutory rights. IN THE BOX 1 X 1/2” Heavy duty impact wrench with 2” anvil 1 X Instruction book 2 SAFETY PRECAUTIONS IMPORTANT FAILURE TO FOLLOW THESE PRECAUTIONS COULD RESULT IN PERSONAL INJURY, AND/OR DAMAGE TO PROPERTY. WORK ENVIRONMENT • Keep the work area clean and tidy. • Dress appropriately - Do not wear loose clothing or jewellery. Tie long hair out of the way. • Keep children and visitors away - Do not let children handle the impact wrench. Make sure that any other persons in the work area are dressed suitably and are wearing eye and ear protectors. • Do not operate the impact wrench where there are flammable liquids or gases. • Keep the air supply hose away from heat, oil and sharp edges. • Do not fit the impact wrench to any stand or clamping device that may damage the tool. USE • Stay alert and use common sense - Do not operate the impact wrench when you are tired or under the influence of alcohol, drugs or medication. • Always wear eye protectors when using the impact wrench - Eye protectors must provide protection from flying particles from the front and the side. • Always wear ear protectors when using the impact wrench. • Do not overreach - Keep proper footing and balance at all times. • Never use any type of bottled gas as a source of power for the impact wrench. • Do not connect the air supply hose with your finger on the trigger of the impact wrench. • Do not exceed the maximum pressure for the impact wrench: 90 psi / 6.2 bar. • Check hoses for leaks or worn condition before use, and ensure that all connections are secure. • Do not use the impact wrench for any other purpose than that described in this book. • Do not carry out any alterations or modifications to the impact wrench. 3 SAFETY PRECAUTIONS • Always disconnect from the air supply when: a) Performing any maintenance b) The impact wrench is not in use. c) The impact wrench will be left unattended. d) Moving to another work area. e) Passing the impact wrench to another person. • Never use the impact wrench if it is defective or operating abnormally. • The impact wrench should be serviced at regular intervals by qualified service personnel. • Avoid damaging the impact wrench for example by applying excessive force of any kind. • ALWAYS maintain the tool with care. Keep it clean for best and safest performance. • Quick change couplings should not be located at the tool. They add weight and could fail due to vibration. • DO NOT force or misuse the tool. It will do a better and safer job at the rate for which it was designed. • DO NOT remove any labels. Damaged labels should be replaced. • This tool vibrates with use. Vibration may be harmful to your hands or arms. Stop using the tool if discomfort, a tingling feeling or pain occurs. Seek medical advice before resuming use. • NEVER use standard sockets. These may shatter with serious consequences. Use ONLY Impact sockets. TRANSPORTATION • Never carry the impact wrench by the air supply hose. • Never carry the impact wrench with your finger on the trigger. STORAGE • When not in use the impact wrench must be disconnected from the air supply and stored in a dry place out of the reach of children (preferably in a locked cabinet). • Avoid storing the impact wrench in environments where the temperature is below 0oC. 4 PARTS Anvil Direction Selector + Air Regulator Trigger Air Inlet AIR SUPPLY WARNING! COMPRESSED AIR CAN BE DANGEROUS. ENSURE THAT YOU ARE THOROUGHLY FAMILIAR WITH ALL PRECAUTIONS RELATING TO THE USE OF COMPRESSORS AND COMPRESSED AIR SUPPLY. • Use only clean, dry, regulated compressed air as a power source for the impact wrench. • Air compressors used with the impact wrench must comply with the appropriate European Community safety directives. • A build up of moisture or oil in the air compressor will accelerate wear and corrosion in the impact wrench. • Never exceed the maximum operating pressure for the impact wrench. AIR HOSE • The air hose must be rated at least 150% of the maximum operating pressure of the tool. 5 RECOMMENDED AIR SUPPLY CONNECTION ASSEMBLY NOTE: ensure the compressor is turned off. 1. Connect a suitable hose to the impact wrench using a ¼” hose adapter. 2. Connect the other end of the hose to the compressor. 3. Your impact wrench is now ready for use. You can fit a whip hose with a quick fit coupling if required (available from your Clarke dealer.) WARNING! COMPRESSED AIR CAN BE DANGEROUS. ENSURE THAT YOU ARE THOROUGHLY FAMILIAR WITH ALL PRECAUTIONS RELATING TO THE USE OF COMPRESSORS AND COMPRESSED AIR SUPPLY. 6 OPERATING INSTRUCTIONS WARNING! WAIT UNTIL THE ANVIL HAS STOPPED ROTATING BEFORE OPERATING THE DIRECTION CONTROL SWITCH. USING THE DIRECTIONAL CONTROL BUTTON The direction control button should be used as follows. 1 For normal tightening, the impact wrench should be operated in the forward (F) direction. 2 For loosening, the impact wrench should be operated in the reverse (R) direction. Direction control button in forward position Direction control button in reverse position FITTING THE IMPACT SOCKET 1 Select the impact socket you require WARNING! NEVER use standard sockets. These may shatter with serious consequences. Use ONLY Impact sockets. 2 Push the inpact socket onto the anvil as shown. 7 OPERATING INSTRUCTIONS ADJUSTING THE POWER To adjust the power, set the air regulator to one of the 5 settings avalaible. 1 3300 rpm 2 6070 rpm 3 7216 rpm 4 7740 rpm 5 8000 rpm Air Regulator OPERATING THE IMPACT WRENCH 1. Locate the socket over the nut to be tightened or loosened. 2. Squeeze the trigger to start the impact wrench. 3. Release the trigger to stop the impact wrench. Squeeze DISCONNECTING THE AIR SUPPLY Do not disconnect the air supply hose until the compressor has been shut down and the compressed air released. 1. Refer to the compressor instruction book for the procedures to shut down and release the compressed air. 2. Once the pressure has been released, disconnect the air supply hose from the impact wrench. 3. Store the impact wrench safely in its box in a dry, secure environment. 8 MAINTENANCE WARNING! Make sure that the impact wrench is disconnected from the air supply before starting any cleaning, or maintenance procedures. Daily • Drain water from air tank, air line and compressor. • Pour a few drops of CLARKE Air Line Oil, into the air inlet. This should be carried out regardless of whether or not an air line lubricator is used. If an Air line lubricator is not used, this procedure should be repeated after every two to three hours of use. Weekly • Check the air inlet screen filter and clean if necessary. CLEANING • Keep the body of the impact wrench clean and free from debris, Grit or gum deposits in the tool may reduce efficiency. SERVICE AND REPAIR • All servicing and repair must be carried out by qualified service technicians. NOTES Please note that factors other than the tool may effect its operation and efficiency such as reduced compressor output, excessive drain on the airline, moisture or restrictions in the line, or the use of connectors of improper size or poor condition which will reduce air supply. **Clarke Air Line Oil is available from your CLARKE dealer part no. 3050825. DECLARATION OF CONFORMITY We declare that these products comply to the following standards/directives • Model No: Serial or Batch number: 98/37/EC CAT103 See product data plate signature: D. Kemp ENGINEERING MANAGER 9 PARTS DIAGRAM PARTS LIST Index No. Part No. 01 02 03 04 05 06 08 09 10 11 KLCAT10301 KLCAT10302 KLCAT10303 KLCAT10304 KLCAT10305 KLCAT10306 KLCAT10307 KLCAT10308 KLCAT10309 KLCAT10310 12 13 KLCAT10311 KLCAT10312 14 KLCAT10313 15 16 KLCAT10314 KLCAT10315 17 22 23 24 25 KLCAT10316 KLCAT10317 KLCAT10318 KLCAT10319 KLCAT10320 Description Motor Housing Throttle Valve Throttle Valve Face Throttle Valve Spring Throttle Valve Stem Air Strainer Assembly Trigger Trigger Pin Reverse Valve Bushing Reverse Valve Bushing Seal Reverse Valve Reverse Valve Detent Ball Reverse Valve Detent Spring Reverse Valve Knob Reverse Valve Knob Screw Grease Fitting Rotor Rear Rotor Bearing Front Rotor Bearing Rear Rotor Bearing Retainer Index No. Part No. 26 27 29 30 31 32 33 34 35 36 KLCAT10321 KLCAT10322 KLCAT10323 KLCAT10324 KLCAT10325 KLCAT10326 KLCAT10327 KLCAT10328 KLCAT10329 KLCAT10330 37 38 38A 39 40 41 KLCAT10331 KLCAT10332 KLCAT10333 KLCAT10334 KLCAT10335 KLCAT10336 43A 43B 44 45 KLCAT10337 KLCAT10338 KLCAT10339 KLCAT10340 10 Description Cylinder Cylinder Dowel Rotor Blade Front End Plate Rear End Plate End Plate Gasket Motor Clamp Washer Hammer Frame Hammer Pin Hammer Frame Rear Washer Hammer Hammer Case Hammer Case Pilot Hammer Case Gasket Hammer Case Bushing Hammer Case Cap Screw Standard Anvil 853-2 2"Extended Anvil Socket Retainer Retainer O-Ring HAND-ARM VIBRATION Employers are advised to refer to the HSE publication “Guide for Employers”. All hand held power tools vibrate to some extent, and this vibration is transmitted to the operator via the handle, or hand used to steady the tool. Vibration from about 2 to 1500 herz is potentially damaging and is most hazardous in the range from about 5 to 20 herz. Operators who are regularly exposed to vibration may suffer from Hand Arm Vibration Syndrome (HAVS), which includes ‘dead hand’, ‘dead finger’, and ‘white finger’. These are painful conditions and are widespread in industries where vibrating tools are used. The health risk depends upon the vibration level and the length of time of exposure to it……in effect, a daily vibration dose. Tools are tested using specialised equipment, to approximate the vibration level generated under normal, acceptable operating conditions for the tool in question. For example, a grinder used at 45° on mild steel plate, or a sander on softwood in a horizontal plane etc. These tests produce a value‘a’, expressed in metres per second per second, which represents the average vibration level of all tests taken, in three axes where necessary, and a second figure ‘K’, which represents the uncertainty factor, i.e. a value in excess of ‘a’, to which the tool could vibrate under normal conditions. These values appear in the declaration on page 2. You will note that a third value is given in the specification - the highest measured reading in a single plane. This is the maximum level of vibration measured during testing in one of the axes, and this should also be taken into account when making a risk assessment. ‘a’ values in excess of 2.5 m/s2 are considered hazardous when used for prolonged periods. A tool with a vibration value of 2.8 m/s2 may be used for up to 8 hours (cumulative) per day, whereas a tool with a value of 11.2 m/s2 may be used for ½ hour per day only. The graph below shows the vibration value against the maximum time the respective tool may be used, per day. The uncertainty factor should also be taken into account when assessing a risk. The two figures ‘ a ’ and ‘ K ’may be added together and the resulant value used to assess the risk. It should be noted that if a tool is used under abnor mal, or unusual conditions, then the vibration level could possibly increase significantly. Users must always take this into account and make their own risk assessment, using the graph as a reference. Some tools with a high vibration value, such as impact wrenches, are generally used for a few seconds at a time, therefore the cumulative time may only be in the order of a few minutes per day. Nevertheless, the cumulative effect, particularly when added to that of other hand held power tools that may be used, must always be taken into account when the total daily dose rate is determined. 11 ">

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Key features
- Heavy-duty impact wrench
- Adjustable power settings
- Twin hammer impact mechanism
- 1/2" square drive
- 400 ft/lb (542 Nm) max torque
- 1/4" BSP air inlet
- Forward & reverse action
- Durable Construction
Frequently asked questions
The maximum operating pressure is 90 psi / 6.2 bar.
Never use standard sockets with an impact wrench. They may shatter due to the impact. Always use impact sockets designed specifically for impact wrenches.
The air regulator allows you to adjust the power of the impact wrench by controlling the air pressure delivered to the tool. This provides different speeds and power levels based on the task.